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authorSebastian Ott <sebott@linux.vnet.ibm.com>2013-08-29 19:34:37 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-08-30 08:57:10 +0200
commitcb8091828757bbc9459ef59248f4a793e681f8cd (patch)
tree4e2b5d5a87e82f149ed9fb581f478f114c67d243 /arch/s390
parent67f43f38eeb34da43b624a29d57b703f4c4844b4 (diff)
s390/pci: use claim_resource
Use pci_claim_resource to find and request bus ressources in pcibios_add_device. Also move some (de)initialization stuff to pcibios_enable_device/pcibios_disable_device. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/pci/pci.c63
1 files changed, 34 insertions, 29 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 56f8a1c4d9b..61167b1209a 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -541,8 +541,6 @@ static void zpci_map_resources(struct zpci_dev *zdev)
continue;
pdev->resource[i].start = (resource_size_t) pci_iomap(pdev, i, 0);
pdev->resource[i].end = pdev->resource[i].start + len - 1;
- pr_debug("BAR%i: -> start: %Lx end: %Lx\n",
- i, pdev->resource[i].start, pdev->resource[i].end);
}
}
@@ -574,32 +572,6 @@ void zpci_free_device(struct zpci_dev *zdev)
kfree(zdev);
}
-/*
- * Too late for any s390 specific setup, since interrupts must be set up
- * already which requires DMA setup too and the pci scan will access the
- * config space, which only works if the function handle is enabled.
- */
-int pcibios_enable_device(struct pci_dev *pdev, int mask)
-{
- struct resource *res;
- u16 cmd;
- int i;
-
- pci_read_config_word(pdev, PCI_COMMAND, &cmd);
-
- for (i = 0; i < PCI_BAR_COUNT; i++) {
- res = &pdev->resource[i];
-
- if (res->flags & IORESOURCE_IO)
- return -EINVAL;
-
- if (res->flags & IORESOURCE_MEM)
- cmd |= PCI_COMMAND_MEMORY;
- }
- pci_write_config_word(pdev, PCI_COMMAND, cmd);
- return 0;
-}
-
int pcibios_add_platform_entries(struct pci_dev *pdev)
{
return zpci_sysfs_add_device(&pdev->dev);
@@ -689,16 +661,49 @@ static void zpci_free_iomap(struct zpci_dev *zdev, int entry)
int pcibios_add_device(struct pci_dev *pdev)
{
struct zpci_dev *zdev = get_zdev(pdev);
+ struct resource *res;
+ int i;
+
+ zdev->pdev = pdev;
+ zpci_map_resources(zdev);
+
+ for (i = 0; i < PCI_BAR_COUNT; i++) {
+ res = &pdev->resource[i];
+ if (res->parent || !res->flags)
+ continue;
+ pci_claim_resource(pdev, i);
+ }
+
+ return 0;
+}
+
+int pcibios_enable_device(struct pci_dev *pdev, int mask)
+{
+ struct zpci_dev *zdev = get_zdev(pdev);
+ struct resource *res;
+ u16 cmd;
+ int i;
zdev->pdev = pdev;
zpci_debug_init_device(zdev);
zpci_fmb_enable_device(zdev);
zpci_map_resources(zdev);
+ pci_read_config_word(pdev, PCI_COMMAND, &cmd);
+ for (i = 0; i < PCI_BAR_COUNT; i++) {
+ res = &pdev->resource[i];
+
+ if (res->flags & IORESOURCE_IO)
+ return -EINVAL;
+
+ if (res->flags & IORESOURCE_MEM)
+ cmd |= PCI_COMMAND_MEMORY;
+ }
+ pci_write_config_word(pdev, PCI_COMMAND, cmd);
return 0;
}
-void pcibios_release_device(struct pci_dev *pdev)
+void pcibios_disable_device(struct pci_dev *pdev)
{
struct zpci_dev *zdev = get_zdev(pdev);